@aerianyx I have no defense. I just do this to our cats every few years, even though they hate it. The year I put a Santa hat and a beard on Pasha, he made this yowling sound I've never heard before or since. He tolerated the Yoda ears hat only slightly better.
But Nikolai. Bless poor little Nikolai. Even with his ears pressed flat against his fur and a giant deer-shaped snood on his head, he was still purring at us. Completely freaked out, but also purring.